No Power after a while Acer "e5-576g"

[Kitkitkit]

Hello friends.... I began to troubleshoot Acer e5-576g laptop motherboard which lose power completely after a minute or two(random).

The power cuts off from PQ17 and when I shot drain and source it powers up the board.

I checked PU1 BQ24780S which controls the power side and everything seems good to me except when meter prob touches the 24780_ACDET power goes for a while and come back.

If you anybody could help me will be saving a life.

PS: Thanks a lot a for people uploaded the schematic and board view as I was referring them all the time for this repair.

https://www.badcaps.net/forum/showpo...10&postcount=8

[mon2]

Re: No Power after a while Acer "e5-576g"

Schematics must be posted in the dedicated section of the forum.

Remove all power. Meter in resistance mode. Confirm the presence and resistance of pr7 and pr10 that are required for the ACDET pin.

[Kitkitkit]

Re: No Power after a while Acer "e5-576g"

thanks for info. Checked pr7 and pr10 both presence with said value. Sometimes machine works for half an hour also

[mon2]

Re: No Power after a while Acer "e5-576g"

Power up with the adapter and confirm that the ACDET pin on the charger IC is stable. This voltage is created by PR7 & PR10 to lower the high adapter voltage.

[Kitkitkit]

Re: No Power after a while Acer "e5-576g"

There is stable stable 2.6V on PR7 PR10 Junction which goes to PU1 ACDET (pin6)

[Kitkitkit]

Re: No Power after a while Acer "e5-576g"

There is stable stable 2.6V on PR7 PR10 Junction which goes to PU1 ACDET (pin6)

added to that I resoldered both resisters pins and PU1 Ic pin. But issue is still there. Can't think of where to check next